Napping is a healthy way to recharge.

Many people lack the necessary regularity in their daily lives due to work or lifestyle reasons, often staying up late and not getting enough sleep.

The "drowsiness" in summer occurs because of the shorter nights and longer days in summer, and the hot and stuffy summer nights that make it difficult to fall asleep, affecting sleep quality. The high temperature also causes blood vessels on the skin to heat up and expand, causing a large amount of blood to flow in, all of which can increase the body's consumption and lead to feelings of fatigue and sleepiness. In addition, many people lack regularity in their daily lives due to work or lifestyle reasons, often staying up late and not getting enough sleep.

Especially after lunch, in order to ensure the digestion and absorption of food, most of the body's blood flows to the digestive system, reducing the relative amount of blood in the brain. Plus, after a morning of work or study, brain cells are also in a state of fatigue, hence the drowsy feeling.

The occurrence of this kind of sleepiness during noon is a normal manifestation of the biological rhythm of sleep and wakefulness, which can be regulated through a nap. Napping can compensate for insufficient nighttime sleep, allowing the brain and various systems of the body to relax and rest, making it more beneficial for work or study in the afternoon and evening.

Napping is therefore called the best way to "recharge for health", with the following effects:

Firstly, during naps, the roles of the sympathetic and parasympathetic nervous systems in the human body are exactly opposite to the original ones, thereby slowing down the body's metabolism, lowering body temperature, slowing breathing, slowing pulse, reducing myocardial oxygen consumption, and reducing heart consumption and arterial pressure. It can also make hormones related to the heart more balanced, which is good for controlling blood pressure, beneficial for heart health, and reduces the incidence of heart diseases such as myocardial infarction.

Secondly, it enhances the body's immune function and strengthens its disease resistance. Insufficient sleep can cause fatigue in the body, and if this continues long-term, it will enter a vicious cycle. Although there may be no obvious organic lesions, the body's immune function weakens, resistance decreases, and factors leading to disease increase.

In addition, it nourishes the brain, refreshes the spirit. After a morning of study or work, the brain is in a state of fatigue. Napping can not only compensate for insufficient nighttime sleep, but also allow the brain and various systems of the body to relax and rest, making people energetic, quick-witted, and in a good mood.

Although napping is a good way to promote health, it also requires proper methods; otherwise, the effect may be counterproductive. Generally, you should not sleep immediately after eating, you should not doze off while sitting or sleep face down on the desk, and the sleep time should not be too long. A nap of about one hour is generally appropriate, and it should not exceed one and a half hours at the longest.